Electroweak Symmetry Breaking from SUSY Breaking with Bosonic See-Saw Mechanism

We introduce the idea of bosonic see-saw mechanism in analogy with the see-saw mechanism. Bosonic see-saw is a new symmetry breaking mechanism and we apply it to explain electroweak symmetry breaking as an inevitable consequence of supersymmetry breaking. The breaking of electroweak symmetry occurs at tree level once supersymmetry is broken. Absence of color/charge breaking in this model is related to doublet-triplet splitting in grand unified theory. An extension of MSSM with a weak triplet shows very interesting results especially when mu =0. It provides the most natural understanding of why we have only electroweak symmetry breaking rather than having color/charge breaking. In the limit mu=0, the model predicts very light chargino mass, 104 GeV while Higgs is heavy, 130 GeV.Comment: 4 page

New SUSY Thought

New SUSY thought is presented. Maximal stop mixing needed for 125 GeV Higgs is linked to the tachyonic stop at the UV boundary. Large $\mu$ does not mean the severe fine tuning if Higgs comes out as a pseudo-Goldstone boson. The small mass of the pseudo-Goldstone Higgs is overcome with extra vector-like fermions needed to explain the Higgs to di-photon rates.Comment: 6 pages, 4 figures, Plenary Talk given at BSM of Particle Physics 2012, Qui Nhon, Vietnam, 15-21 July 201

A simple proof of Zeeman's theorem

It is discussed that Zeeman's theorem can be directly obtained from Liouville's theorem if we assume sufficient differentiability

A characterization of causal automorphisms on two-dimensional Minkowski spacetime

It is shown that causal automorphisms on two-dimensional Minkowski spacetime can be characterized by the invariance of the wave equations

A note on conformal equivalences

A new characterization of conformal transformations is given. By use of this, the general form of conformal transformation on two-dimensional Minkowski space is given and its conformal structure is analyzed

BSM Landscape

BSM landscape of motivated and unmotivated theories is overviewed with an emphasis on new developments guided by naturalness principle.Comment: 9 pages, 2 figures, Proceedings of The Fifth Annual Conference on Large Hadron Collider Physics, Shanghai Jiao Tong University, Shanghai, China, May 15-20, 201

Brane World in Generalized Gravity

We consider Randall-Sundrum(RS) model in generalized gravities and see that the localization of gravity happens in generic situations though its effectiveness depends on the details of the configuration. It is shown that RS picture is robust against quantum gravity corrections ($\phi \R$) as long as the correction is reasonably small. We extend our consideration to the model of scalar(dilaton) coupled gravity which leads us to the specific comparison between RS model and inflation models. The exponential and power law hierarchy in RS model are shown to correspond to the exponential and power law inflation respectively.Comment: 10 pages, contribution to proceedings of COSMO2000, Cheju, Kore

To be (finite) or not to be, that is the question "Kaluza-Klein contribution to the Higgs mass"

Recently five dimensional supersymmetric models with a Scherk-Schwarz supersymmetry breaking and a localized superpotential on a fixed-point have been constructed to yield a definite prediction for the Higgs mass. We examine this issue in detail and show that the finite one loop correction and the definite prediction for the Higgs mass are just a consequence of a special "Kaluza-Klein regularization" scheme.Comment: RevTeX, 14 pages, 4 figure

Gauge Messenger Models

We consider gauge messenger models in which X and Y gauge bosons and gauginos are messengers of supersymmetry breaking. In simple gauge messenger models, all the soft parameters except mu and Bmu are calculated in terms of a single scale parameter M_SUSY which is proportional to F/M_GUT. Unique prediction on dark matter in gauge messenger models is discussed. (Based on hep-ph/0601036 and hep-ph/0607169)Comment: 9 pages, 4 figures, Talk given at the workshop "The Dark Side of the Universe" (DSU 2006), Madrid, June 200

Causal and conformal structures of globally hyperbolic spacetimes

The group of conformal diffeomorphisms and the group of causal automorphisms on two-dimensional globally hyperbolic spacetimes are clarified. It is shown that if spacetimes have non-compact Cauchy surfaces, then the groups are subgroups of that of two-dimensional Minkowski spacetime, and if spacetimes have compact Cauchy surfaces, then the groups are subgroups of that of two-dimensional Einstein's static universe